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1. A substantial increase in the mutation rate in E.coli would be caused by:1 A mutation in the mutS gene.2 A mutation in the rpsE gene.3 Exposure to a bacteriophage, such as phagelambda.4 Growth in a liquid culture.
2. Which of the following could makebacteria resistant to the bacteriophage λvir?1 A mutation in lamB.2 Transformation into a lysogen.3 Growth on MacConkey agar.4 A mutation in ompC.
3. Bacterial cells resistant to λvirare plated onto a maltose MacConkey plate and colorless coloniesare observed on the plate the following day. Which of the followingbest represents the genotype of the bacteria comprising thecolorless colonies?1 lamB¯2 malP¯3 malQ¯4 malT¯
A population is reproductively isolated. Determine which of the following is primarily responsible for the introduction of new alleles at genetic loci into the population?
One process that is considered very important to the health of coral reef ecosystems (and that may be currently under stress) is their connectedness to surrounding systems.
1 a man with hemophilia x linked recessive disease has a child with a woman who does not have hemophilia but whose
you are recording currents using an intracellular electrode and voltage-clamp from a squid giant axon. you change the
how The sex of a human is determined
Eastern hognose snakes are dietary specialists feeding almost exclusively on toads of the genus Anaxyrus. If you conducted a study of these species at Rock Bridge State Park would you expect the number of snakes in your study area to be large, sma..
q1. you have the technology required to measure each of in a sample of animal cells chlorophylls organelle density
Many groups are using modified RNA with 2'-deoxy-2'-fluoro substitutions for riboses (i.e. a 2'-fluorine instead of a 2'-OH) to prevent RNA cleavage by ribonucleases.
The DNA molecule is made up of two strands each of which is a sequence of sugar and phosphate molecules linked by covalent bonds.
explain the energetic of catalysis in simplest terms.
What is the narrow-sense heritability for these Turkeys. Would this estimate be accurate if offspring and parents received a different diet? Explain.
The Cape Wind project in Nantucket Sound Electricity generated from wind has been developed as one of the best alternative energy strategies. It produces no greenhouse gas emissions, and comes from harnessing a free source of energy - the wind..
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